Reset regtest rt43

I am not 100% sure this will make it reproducible on different machines
(maybe we are trying to fight Lyapunov). Anyway, for sure this
test was not reset after commit 77aa3cd9058c6ffa978c360819a2c35154db0f97
and this was a mistake
ContactMap: added weights and parallelisation
rt28: reset
ContantMap changes
Fixed error in gyration manual
Fixed error in gyration manual

(cherry picked from commit 650bc4f0c5b69ee7054cea263f7cd9edd50ef924)
Merge branch 'v2.0' into v2.1
Merge commit '261adade884f5c0fa4f18686fc0b9f1187aefca3' into v2.1-hrex